Section 4: Multi-frequency capacitance-voltage unit
Model 4200A-SCS Parameter Analyzer Reference Manual
4-10
4200A-901-01 Rev. C / February 2017
Connection compensation
You can correct offset and gain errors caused by the connections between the 4210-CVU and the
device under test (DUT) by using connection compensation. To use correction, you will:
•
Generate connection compensation data for open, short, and load conditions.
•
Enable CVU connection compensation.
When a test is run, the enabled compensation values are factored in by each measurement.
If open, short, or load compensation is disabled, those compensation values are not used by the test.
Once compensation values are stored, they are available to any project that uses a CVU.
Update connection compensation any time the connection setup is changed or disturbed. Changes
in temperature or humidity do not affect connection compensation.
If the 4210-CVU is connected to a 4200A-CVIV Multi-Switch, run the
cvu-cviv-comp-collect
action. Refer to the
4200A-CVIV Multi-Switch User’s Manual
for detail.
Use the following general guidelines to determine which correction needs to be done:
•
Open
correction: Offset correction for small capacitances (>1 MΩ, large impedance).
•
Short
correction: Offset correction for large capacitances (<10 Ω, small impedance).
•
Load
correction: Resistive load correction for gain error. Keithley recommends a load that is as
close in impedance to the cabling system (100
Ω). The load must have an impedance versus
frequency characteristic that is purely resistive over the frequency range of subsequent
measurements.
